JP2020526077A - Electronic device, wireless communication device, and wireless communication method - Google Patents

Abstract

The present disclosure relates to electronic devices, wireless communication devices, and Japanese wireless communication methods. According to one embodiment, the electronic device used on the base station side includes a processing circuit. The processing circuit controls the target channel to perform channel detection based on a specific beam direction on the beam corresponding to the user equipment, and determines access to the target channel based on the result of the channel detection. , Are arranged as.

Description

The present disclosure generally relates to the field of wireless communication, and more specifically, an electronic device used for a base station device side, a wireless communication device and a wireless communication method, and an electronic device used for a user device side, a wireless communication device, and a wireless communication device. Regarding communication method.

The multi-beam communication process generally includes a phase of an initial beam alignment between a transmission reception node (Transmission Reception Point, TRP) and a user equipment (UE) (which may be referred to as a beam determination process), and a TRP movement of the UE. Beam tracking phase (which may also be referred to as a beam modification process) for tracking, etc. As shown in FIG. 10, the TRP and the UE can update the beam due to movement, rotation, blocking, etc. of the UE. The beam update process can be regarded as a beam refinement process beam process and is based on prior knowledge of beam pairs at TRP and UE.

The following provides a brief overview of embodiments of the invention and provides a basic understanding of certain aspects of embodiments of the invention. It should be understood that this summary is not an exhaustive overview of the embodiments of the invention. It is not intended to intentionally identify key or critical parts of the invention or to intentionally limit the scope of the invention. Its purpose is to present some concepts in the form of simplifications that are discussed above in more detail in the discussion that follows.

According to one embodiment, an electronic device used on the base station side is provided and includes a processing circuit. The processing circuit controls the target channel to perform channel detection based on a specific beam direction on the beam corresponding to the user equipment, and determines access to the target channel based on the result of the channel detection. , Is arranged as.

According to another embodiment, there is provided a wireless communication device used on the base station side, including a transceiver device and a processing circuit. The processing circuit controls the transmitter/receiver so as to perform channel detection based on a specific beam direction on the target channel on the beam corresponding to the user equipment, and based on the result of the channel detection, access to the target channel is performed. It is arranged to confirm.

According to another embodiment, a wireless communication method used for a base station side is provided to perform channel detection based on a specific beam direction on a target channel on a beam corresponding to a user equipment. Determining access to the target channel based on the result of.

According to a further embodiment, there is provided an electronic device used on a user device side, the device including a processing circuit. The processing circuit controls on the beam corresponding to the base station to perform channel detection based on a specific beam direction for the target channel, the result of channel detection, or based on an instruction from the base station, Controlled to access the target channel.

According to another embodiment, there is provided a wireless communication device used on a user equipment side, which includes a transceiver device and a processing circuit. The processing circuit controls the transmission/reception device so as to perform channel detection based on a specific beam direction for the target channel on the beam corresponding to the base station, and receives the result of channel detection or an instruction from the base station. Based on which the transceiver device is controlled to access the target channel.

According to yet another embodiment, a wireless communication method used for a user equipment side is provided to perform channel detection based on a specific beam direction on a target channel on a beam corresponding to a base station. Accessing the target channel based on the result or the instruction from the base station.

Embodiments of the present invention are advantageous for increasing the probability of access to a target channel by performing channel detection based on a specific beam direction for the target channel.

The invention can be better understood by reference to the following description taken in conjunction with the drawings. In all the drawings, the same or similar parts are indicated by the same or similar reference numerals. The aforementioned drawings are included in the present specification together with the following detailed description, and are configured as a part of the present specification. Further, by way of examples, preferred embodiments of the present invention will be described, and the principles and merits of the present invention will be described. Interpret. In the drawing,

It is a block diagram showing an example of composition of electronic equipment used for a base station side by one example of the present invention. FIG. 3 is a block diagram showing a configuration example of a wireless communication device used on the base station side according to an embodiment of the present invention. 4 is a flowchart illustrating an example of a process of a wireless communication method used on the base station side according to an embodiment of the present invention. It is a block diagram which shows the structural example of the electronic device used for the user device side by one Example of this invention. FIG. 8 is a block diagram showing a configuration example of an electronic device used on the user device side according to another embodiment of the present invention. 1 is a block diagram showing a configuration example of a wireless communication device used on a user equipment side according to an embodiment of the present invention. 4 is a flowchart illustrating an example process of a wireless communication method used on a user equipment side according to an embodiment of the present invention. FIG. 3 is a block diagram showing a configuration example of a wireless communication device used on the base station side according to an embodiment of the present invention. 1 is a block diagram showing a configuration example of a wireless communication device used on a user equipment side according to an embodiment of the present invention. It is a schematic diagram for explaining communication based on a specific beam direction. It is a schematic diagram for explaining interference in communication based on a specific beam direction. FIG. 6 is a schematic diagram illustrating an exemplary application scenario of an embodiment of the present invention. FIG. 6 is a schematic diagram illustrating time-space resources of an exemplary communication process of an embodiment of the present invention. 3 is a flow chart illustrating an exemplary communication process of an embodiment of the present invention. FIG. 6 is a schematic diagram illustrating a dynamic minislot aggregation-based time division multiplexing scheme in one exemplary embodiment of the present invention. 6 is a flow chart illustrating an example process of channel access in one exemplary embodiment of the invention. FIG. 16 is a block diagram illustrating an exemplary configuration of a computer that implements the method and apparatus of the present disclosure. It is a block diagram showing an example of an example composition of a smart phone to which the contents of this indication can be applied. FIG. 16 is a block diagram showing an example of an exemplary configuration of an eNB (evolved base station) to which the contents of the present disclosure can be applied. FIG. 16 is a block diagram showing an example of an exemplary configuration of a car navigation device to which the contents of the present disclosure can be applied.

Embodiments of the present invention will be described below with reference to the drawings. The elements and features described in one drawing or one embodiment of the present invention can be combined with the elements and features shown in one or more other drawings or embodiments. It should be noted that, for the sake of clarity, illustrations and descriptions of parts and processes known to those skilled in the art which are not related to the present invention have been omitted from the drawings and the description.

As shown in FIG. 1, the electronic device 100 used on the base station side according to the present embodiment includes a processing circuit 110. The processing circuit 110 can be realized, for example, as a specific chip, a chipset, a central processing unit (CPU), or the like.

The processing circuit 110 includes a control unit 111 and a confirmation unit 113. Although the control unit 111 and the determination unit 113 are shown in the form of functional blocks in the drawings, it goes without saying that the functions of these units can be realized by the processing circuit 110 as a whole, but the processing circuit 110 is not always necessary. It should be understood that it is not realized by the individual actual components within. Further, although the processing circuit 110 is shown by one frame in the drawing, the electronic device 100 may include a plurality of processing circuits, and the functions of the control unit 111 and the confirmation unit 113 may be distributed to the plurality of processing circuits. It is possible to realize these functions by the cooperation of a plurality of processing circuits.

The control unit 111 is arranged to control on the beam corresponding to the user equipment to perform channel detection based on a specific beam direction on the target channel.

In a specific embodiment, channel detection may be performed, for example, by a clear channel assessment (CCA) based on a specific beam direction, or a received signal strength indicator (RSSI) based on a specific beam direction. Can be included. CCA based on a particular beam direction is commonly used to quickly assess the real-time occupancy of an unlicensed band in a direction. For example, in scenarios where low latency is required, access to the target channel may be established based on CCA results. RSSI based on a particular beam direction is a long-term average estimate of interference and is a statistic. For example, in a delay tolerant scenario, access to the target channel may be established based on the RSSI result. However, the channel detection in the embodiments of the present invention is not limited to the above-described exemplary form.

Also, according to one embodiment, the target channel may be located in the 60 GHz unlicensed band. The 60 GHz unlicensed band provides a wider available contiguous bandwidth in different parts of the world, and there is a limited number of Wi-Fi ((Wireless Fidelity)) deployments. The Wi-Fi standard based on the currently used IEEE 802.11ad is based on the principle of LTB (Listen Before Talk). Although the 60 GHz band exhibits relatively high propagation path loss, the use of this frequency band is attracted by utilizing directional communications and benefiting from beamforming gain. Due to the small wavelength, it is easier to manufacture a small multi-element antenna array for beamforming. And, communication based on a specific beam direction can obtain higher spatial multiplexing and improve system throughput and spectral efficiency.

As an example, a target channel located in the 60 GHz unlicensed band has been described, but it should be understood that the present invention is applicable to other bands as well.

Also, the beam corresponding to the user equipment may be based on a beam arrangement for communication between the base station and the user equipment based on a particular beam direction. According to one embodiment, the processing circuit 110 can be arranged to control the beam placement.

For the sake of explanation, an exemplary process for determining a beam arrangement for communication based on a specific beam direction will be described below by taking the downlink as an example, but a similar process can be applied to downlink communication based on the specific beam direction. Can also be applied to.

For the downlink, it is necessary to manage the base station transmit beam and the user equipment receive beam (correspondingly, for the uplink, it is necessary to manage the base station receive beam and the user equipment transmit beam), Benefit from transmit/receive gain for communications based on a particular beam direction. Next, for purposes of explanation and not limitation, an exemplary process involved in beam management is described, which process may be performed in one or more TRPs.

P-1 process: Used to make UE measurements on different TRP transmit beams to support selection of TRP transmit beams or UE receive beams. For beamforming in TRP, the process generally involves performing transmit beam scanning within or between TRPs from a group of different beams. For beamforming at the UE, the process generally involves receiving beam scanning from a group of different beams. The TRP transmit beam and the UE receive beam can be determined together or continuously.

P-2 process: Used to allow changing the transmit beam between or within TRPs by making UE measurements for different TRP transmit beams. The beam can be derived from a smaller set of beams to provide beam refinement for the P-1 process. The P-2 process can be a special case of the P-1 process.

P-3 process: Used to change the UE receive beam when the UE uses beamforming by making UE measurements on the same TRP transmit beam.

A particular user equipment corresponds to a particular base station transmit beam if the beam constellation is known, which allows the base station to perform channel detection only on the corresponding beam.

Also, according to one embodiment, different beams may occupy different resources in a defined beam arrangement, thereby avoiding interference between different beams.

Alternatively, according to another embodiment, different beams may occupy the same resource in a defined beam arrangement. In this case, the processing circuit 110 may also be arranged to control the base station to perform self-interference cancellation, in order to avoid interference between different beams.

Continuing to refer to FIG. 1, the determination unit 113 is arranged to determine access to the target channel based on the result of channel detection.

For example, if the CCA based on a specific beam direction is successful, or if the RSSI based on a specific beam direction is within the normal range (the range is determined according to the specifications of the specific device and the application scenario). Access) to the target channel and, for example, use the target channel to transfer data with the user equipment.

In the above-described embodiment, it is advantageous to increase the access probability to the target channel by performing the channel detection based on the specific beam direction on the target channel.

Also, according to one embodiment, the control unit 111 is further arranged to control to instruct the user equipment to perform channel detection based on a particular beam direction for the target channel, And the determination unit 113 may be arranged to determine access to the target channel further based on the result of the channel detection of the user equipment.

As mentioned above, communication based on a particular beam direction can obtain higher spatial multiplexing, however, for unlicensed band operation, the interference is no longer omnidirectional and the first sender The transmit beam from is not monitored by a nearby second sender, and collisions may occur when the second sender begins transmitting. Therefore, it may be necessary to improve the channel estimation and collision avoidance scheme using narrow transmit beams as compared to using wide transmit/receive beams.

For example, the transmit beam for high frequency scenarios is relatively narrow, which causes the signal energy to be concentrated at the target user equipment, while this can also cause hidden node problems. As shown in FIG. 11, when the base stations BS1 and BS2 perform transmission or reception in the directional beam mode and BS1 senses that the channel is free and transmits to UE1, BS2 detects the energy of BS1. It may not be possible and therefore BS2 may send a signal to UE2. However, since both UE1 and UE2 are within the coverage of the transmit beams of B1 and B2, therefore UE1 and UE2 may not be able to receive the corresponding transmission due to inter-system (inter-RAT) interference. ..

Therefore, it may be insufficient to obtain the complete channel occupancy information only by the channel detection based on the specific beam direction by the base station, so the UE needs RSSI/CCA support based on the specific beam direction. There is a possibility that Specifically, the RSSI of the UE can evaluate the average occupancy of the unlicensed band in a certain direction within a certain period, and the CCA performed by the UE can quickly determine the real-time occupancy of the unlicensed band in a certain direction. Can be evaluated.

For example, in a very low latency scenario, license assistance may allow the base station to trigger the UE to report the CCA result based on a particular beam direction without having to report the RSSI. ..

On the other hand, in a delay tolerant scenario, the license-assisted scheme allows the base station to trigger the UE to report RSSI based on a particular beam direction. This RSSI can be directed to the UE receive beam and thus further contains beam information. The base station may pre-determine the interference level around the UE depending on the RSSI reported by the UE. When the RSSI is within the normal range, the base station can determine that there is no interference source near the UE. Otherwise, the base station can determine that there is an interference source near the UE.

The base station can then perform channel detection based on the particular beam direction. For example, if both the base station CCA and the UE CCA succeed, or if the CCA succeeds and the UE RSSI is within normal range, the base station may issue data to the UE using the unlicensed band. You can

FIG. 16 illustrates an exemplary process of communication between a UE and a base station in a delay tolerant scenario. This is because the UE can report RSSI based on a particular beam direction in this scenario, which is a long-term average estimate of interference and is a statistic. The base station gNB can acquire relatively complete information according to RSSI. When the RSSI is at the normal level, the gNB may trigger the UE to not report the CCA based on the specific beam direction, and if the RSSI is not normal, the gNB may detect the interference situation in the direction of the UE. Unable to obtain, in this case the gNB may further request the UE to make a CCA based on a particular beam direction, the CCA providing information to the gNB to make more decisions, By doing so, it is possible to contribute to the transmission of data and improve the transmission efficiency.

In this embodiment, it is advantageous to avoid the hidden node problem described above by establishing access to the target channel further based on the result of the channel detection of the user equipment.

Also, user equipment served by the base station may move within the coverage of the base station. When communicating based on beams in a particular direction, the user equipment may have moved from one beam to another due to movement, which may result in the following cases. The base station and a user equipment are no longer in use because the user equipment has left the corresponding beam before the maximum channel occupation time (MCOT) of the previously created channel has expired. In such a case, it is disadvantageous for channel occupation.

According to one embodiment, within a defined maximum channel occupancy time for a beam corresponding to a user equipment, another user equipment that falls within the range of the beam may be targeted if another channel is not detected. The channel is used to communicate with the other user equipment.

That is, the base station does not release the channel before the MCOT ends. One UE can exit the beam in which it resides before the MCOT ends, and another UE that subsequently enters that beam can take over the channel in the remaining MCOT without having to perform channel detection. This is advantageous for enhancing the channel occupancy when the UE moves.

Correspondingly, according to one embodiment, the control unit 111 may further be arranged to control to receive the real-time position information reported by the user equipment.

By way of example and not limitation, the method by which the UE obtains a position may include a GPS (Satellite Positioning System) positioning method or a base station coordinated positioning method.

It is also possible that multiple user equipments are within the same beam coverage of the base station. According to one embodiment, data transmission can be performed in time division multiplexing for different user equipments within the same beam range.

Further, for operation on the target channel in the unlicensed band of 60 GHz, for example, the base station may download the LBT or CCA as soon as possible after completing the LBT or CCA in order to minimize the length of the reservation signal. It must be able to send link transmission bursts. Correspondingly, according to one embodiment, the base station may control the data transmission with the user equipment on the target channel using the minislot as a basic scheduling unit.

However, the blind detection operation at the start of each minislot may also cause an increase in UE power consumption. Therefore, the minislot aggregation and dynamic UE monitoring schemes can be adopted.

According to an embodiment, the control unit 113 may be arranged to instruct the installation of the minislot according to the downlink control information (DCI) of the physical downlink control channel (PDCCH).

If the DCI indicates that one user equipment is scheduled, the user equipment shall transmit data in the next predetermined number of minislots, otherwise the user equipment shall: Switch to standby until DCI.

Power consumption of the UE can be saved through the dynamic minislot aggregation and the dynamic UE monitoring scheme.

More specifically, for example, the following slot aggregation method can be adopted.
1) A single scheduling license for scheduling N transport blocks (TBs), each TB mapped to each slot and associated with its own hybrid automatic repeat request (HARQ) process.
2) A single scheduling license for scheduling the same TB in N slots, the same TB is mapped to each TB with a changed redundancy version, and the TB is a single HARQ process. Associated with.
3) A single scheduling license for scheduling a single TB, which is mapped to N slots and associated with a single HARQ process.

Next, an example of a communication process based on a predetermined beam direction between the base station and the user equipment will be described with reference to FIGS. 12 and 13. It is understood that the examples of the invention do not necessarily include the various aspects of the above-described embodiments of the invention as the following examples, but can include any combination of the one aspect or further aspects described above. I want to.

As shown in FIG. 12, first, UE1 is located in the coverage area of the beam (Beam) 2 of the base station gNB, and is joint CCA (CCA of gNB based on a specific beam direction and CCA of UE1 based on a specific beam direction). ) Was successful. In the MCOT, the gNB can transmit downlink data to the UE1 more quickly by shortening the time length of the reservation signal by the minislot aggregation method. In this case, UE2 is located within the coverage of beam 1 and the joint CCA was also successful.

After a period of time, for example, UE2 has moved into the coverage area of beam 2 (solid arrow in FIG. 13 represents movement of UE). In this case both UE1 and UE2 are located on beam 2 and they may share the channel, eg in a time division multiplex manner.

After some time, for example, UE1 exits beam 2 but MCOT does not end. In this case, UE2 can continue to occupy the unlicensed channel created by UE1 and gNB.

Since UE1 has moved to an area that is not covered by the created beam, the joint CCA needs to be done again. Upon successful joint CCA, UE1 can receive downlink data at the new MCOT. If the joint CCA fails, no data will be sent. Although the joint CCA method has been described as an example, the implementation of the present invention is not limited to the joint channel detection method, and the access to the target channel is determined based only on the channel detection result on the base station side or the user equipment side. It is possible.

Further, as shown in FIG. 13, in slot 2, gNB issues data to UE 1 using beam 2, and gNB performs CCA using beam 1. This case is divided into the following two subcases.

One sub-case is that all beams occupy the same frequency resource and gNB operates in full-duplex mode. In such a sub-case, when transmission is performed using the beam 2, leakage occurs, and this leakage enters the receiving circuit of the beam 1. Due to this leakage, the received power of beam 1 may be high. To avoid the effects of leakage on CCA, gNB may be equipped with an interfering self-canceller.

Another sub-case is that different beams use different frequency resources. For example, different beams use different carrier frequencies because there are wider frequency band resources available above 60 GHz. By doing so, it is naturally possible to avoid the mutual beam interference problem.

Next, referring to FIG. 14, an exemplary communication process between the base station and the user equipment will be described, corresponding to the case where the UE reports the real-time position to the base station. As shown in the flowchart of FIG. 14, after receiving the real-time location of the UE, the base station can determine whether the UE is within the coverage of the existing downlink beam. If the UE is not in coverage (eg, the movement of UE1 in FIG. 12), the gNB can trigger the UE to report the result of CCA based on a particular beam direction. If the UE is in coverage (eg, the movement of UE2 in FIG. 12), the UE may no longer perform CCA and the base station may issue data to the UE. That is, UE1 and UE2 perform dynamic time division multiplexing in MCOT. Note that Pcell and Scell in FIG. 14 are used to indicate that the UE communicates with the base station via the UE licensed band and the unlicensed band, respectively, and are intended to represent that the UE communicates with two base stations. do not do.

FIG. 15 shows an exemplary schematic diagram of a time division multiplexing scheme based on dynamic minislot aggregation. If there are multiple UEs within the coverage of the beam (eg, both UE1 and UE2 shown in FIGS. 12 and 13 are both located in beam 2 at the same time), the flexible minislot aggregation allows these UEs to , PDCCH is dynamically monitored, the DCI common to the UE is decoded to obtain the current number of minislot aggregations, and then the DCI specific to the UE is decoded to obtain whether it is scheduled. When one UE is scheduled, it receives downlink data in the next few minislots. Otherwise, the UE will switch to sleep until the next DCI.

UE1 exits the beam in which it resides before the MCOT ends, and then UE2, which enters the beam, can take over the channel in the remaining MCOT and does not need to perform CCA again. That is, the gNB does not release the channel before the MCOT ends, thus allowing some increase in channel occupancy without having to perform frequent CCA operations. After UE1's MCOT ends, UE2 always releases the channel to ensure fair sharing of channel resources with other systems.

Next, a configuration example of the wireless communication device used on the base station side according to the embodiment of the present invention will be described without repeating the above detailed description. As shown in FIG. 2, the wireless communication device according to the present embodiment includes a transmission/reception device 210 and a processing circuit 220. The processing circuit includes a control unit 221 and a determination unit 223.

The control unit 221 is arranged to control the transceiver 210 to perform channel detection based on a specific beam direction on the target channel on the beam corresponding to the user equipment.

The determination unit 223 is arranged to determine access to the target channel based on the result of channel detection.

In the above description of the apparatus used on the base station side according to the embodiments of the present invention, some processes and methods are also explicitly disclosed. Next, a wireless communication method used on the base station side according to an embodiment of the present invention will be provided without repeating the contents already described above.

As shown in FIG. 3, the wireless communication method used on the base station side according to an embodiment includes the following steps.
In S310, channel detection based on a specific beam direction is performed on the target channel on the beam corresponding to the user equipment.
In S320, access to the target channel is determined based on the result of channel detection.

Further, the embodiment of the present invention further includes an electronic device used on the user device side.

As shown in FIG. 4, the electronic device 400 used on the user device side according to an exemplary embodiment includes a processing circuit 410. The processing circuit 410 includes a detection unit 411 and an access unit 413.

The detection unit 411 is arranged to control to perform channel detection based on a specific beam direction on the target channel on the beam corresponding to the base station.

Similar to the previous embodiments, channel detection may include, for example, CCA based on a particular beam direction or RSSI based on a particular beam direction. For example, in a scenario where low delay is required, it is possible to access the target channel based on the result of CCA, and in a delay tolerant scenario, access to the target channel is based on the result of RSSI. It is possible to do.

The access unit 413 is arranged to control the access to the target channel based on the result of channel detection or an instruction from the base station.

That is, the electronic device used in the user equipment side according to the present embodiment may autonomously determine the access to the target channel according to the channel detection result, or the access to the target channel is performed by the service base of the user equipment. It may be determined by the station. When the service base station determines the access to the target channel, refer to the above description of the embodiment regarding the base station side, the result of channel detection on the base station side, or the channel between the base station side and the user equipment side. Access to the target channel may be established based on the result of the detection.

In the case where the base station side and the user equipment side perform joint channel detection, the electronic device used for the user equipment side according to one embodiment performs channel detection based on the instruction of the base station and reports the detection result to the base station. You may.

Correspondingly, as shown in FIG. 5, the electronic device 500 used on the user device side according to an exemplary embodiment includes a processing circuit 510. The processing circuit 510 includes a detection unit 511, an access unit 513, and a control unit 515. The arrangement of the detection unit 511 and the access unit 513 is similar to the detection unit 411 and the access unit 413 described above.

The control unit 515 is arranged to control to receive an instruction to perform channel detection from the base station and to report the result of channel detection to the base station.

Also, channel detection based on a particular beam direction can be based on the beam constellation between the base station and the user equipment. Correspondingly, and with reference to FIG. 5, according to one embodiment, the control unit 515 controls to establish a beam arrangement for communication based on a particular beam direction between the user equipment and the base station. Can be arranged as: Specifically, the beam arrangement can be determined in a manner similar to that described in the embodiment on the base station side.

Also, considering the case where the user equipment moves between different beams, and referring to FIG. 5, according to one embodiment, the control unit 515 reports the real-time position information of the user equipment to the base station. Can be arranged to control. This allows, for example, one UE to exit the beam in which it resides before the MCOT ends and then another UE that enters the beam can take over the channel in the remaining MCOT and perform channel detection. No need to do.

As described above, the base station can control data transmission with the user equipment on the target channel using the minislot as a basic scheduling unit. Further, referring to FIG. 5, according to one embodiment, the control unit 515 may be arranged to control data transmission with the base station on the target channel using the minislot as a scheduling unit.

More specifically, the instruction regarding the setting of the minislot may be received by the DCI of the PDCCH. If the DCI indicates that the user equipment is scheduled, the user equipment will perform data transmission in the next predetermined number of minislots, otherwise the user equipment will switch to standby until the next DCI.

FIG. 6 shows a configuration example of a wireless communication device used on the user equipment side according to an embodiment. As shown in FIG. 6, the wireless communication device 600 used on the user equipment side according to the present embodiment includes a transmission/reception device 610 and a processing circuit 620. The processing circuit 620 includes a detection unit 621 and an access unit 623.

The detection unit 621 is arranged to control the transceiver 610 to perform channel detection based on a specific beam direction for the target channel on the beam corresponding to the base station.

The access unit 623 is arranged so as to control the transmission/reception device 610 to access the target channel based on the result of channel detection or an instruction from the base station.

FIG. 7 illustrates a wireless communication method used on the user equipment side according to one embodiment, which includes the following steps.
In S710, channel detection based on a specific beam direction is performed on the target channel on the beam corresponding to the base station.
In S720, the target channel is accessed based on the result of channel detection or the instruction from the base station.

FIG. 8 is a block diagram showing a configuration example of a wireless communication device used on the base station side according to an embodiment of the present invention. As shown in FIG. 8, the wireless communication device 800 includes a control device 810 and a confirmation device 820. The controller 810 is arranged to perform channel detection based on a particular beam direction on the target channel on the beam corresponding to the user equipment. The determining device 820 is arranged to determine access to the target channel based on the result of channel detection.

FIG. 9 is a block diagram of a configuration example of a wireless communication device used on the user equipment side according to an embodiment of the present invention. As shown in FIG. 9, the wireless communication device 900 includes a detection device 910 and an access device 920. The detector 910 is arranged to perform channel detection based on a particular beam direction on the target channel on the beam corresponding to the base station. The access device 920 is arranged to access the target channel based on the result of channel detection or an instruction from the base station.

Embodiments of the present invention include increasing channel access probability, sharing unlicensed bands fairly with other systems, increasing channel occupancy, improving spectrum efficiency, and saving UE power. One or more of the effects can be achieved.

As an example, each step of the above method and each component module and/or unit of the above apparatus may be implemented as software, firmware, hardware or a combination thereof. When implemented by software or firmware, a program constituting software for implementing the above method is installed from a storage medium or a network into a computer having a dedicated hardware structure (for example, a general-purpose computer 1700 shown in FIG. 17). .. This computer can execute various functions when various programs are installed.

In FIG. 17, a central processing unit (that is, CPU) 1701 performs various processes by a program stored in a read-only storage medium (ROM) 1702 or a program loaded from a storage unit 1708 to a random access memory (RAM) 1703. Execute. The RAM 1703 also stores data required when the CPU 1701 executes various types of processing as necessary. The CPU 1701, ROM 1702, and RAM 1703 are connected to each other via a bus 1704. The input/output interface 1705 is also connected to the bus 1704.

An input unit 1706 (including a keyboard, a mouse, etc.), an output unit 1707 (for example, a cathode ray tube (CRT), a display such as a liquid crystal display (LCD), a speaker, etc.), a storage unit 1708 (including hardware, etc.), The communication unit 1709 (including a network interface card such as a LAN card and a modem) is connected to the input/output interface 1705. The communication unit 1709 executes communication processing via a network, for example, the Internet. The driver 1710 may be connected to the input/output interface 1705 as needed. Removable media 1711 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor storage device, etc. are mounted in the driver 1710 as needed, so that the computer program read therefrom is installed in the storage unit 1708 as necessary. It

In the case of realizing the above series of processing by software, a program constituting the software is installed from a network such as the Internet or a storage medium such as the removable medium 1711.

As will be understood by those skilled in the art, such a storage medium is not limited to the removable medium 1711 in which the program shown in FIG. 17 is stored and which is delivered separately from the device so as to provide the program to the user. The removable medium 1711 is, for example, a magnetic disk (including a floppy disk (registered trademark)), an optical disk (optical disk read-only storage medium (CD-ROM) and digital versatile disk (DVD)), a magneto-optical disk (mini disk (MD). ) (Including registered trademark) and semiconductor memory devices. Alternatively, the storage medium may be a ROM 1702, a hard disk included in the storage unit 1708, or the like, which stores the program and is distributed to the user together with an apparatus including the program.

The invention further relates to a program product in which a device-readable command code is stored. When the command code is read and executed by the device, the method according to the embodiment of the present invention can be executed.

Correspondingly, a storage medium loaded with a program product in which the device-readable command code is stored is also included in the disclosure of the present invention. The storage medium includes, but is not limited to, a floppy disk, an optical disk, a magneto-optical disk, a memory card, a memory stick and the like.

The examples of the present application further relate to the following electronic devices. When the electronic device is applied to the base station side, the electronic device may be realized as an evolved node B (eNB) of any type, for example, a macro eNB and a small eNB. The small eNB may be an eNB covering a cell smaller than a macro cell, for example, a picofarad eNB, a micro eNB, or a home (femto) eNB. Alternatively, the electronics may be implemented as any other type of base station, eg NodeB and base transceiver base station (BTS). The electronic device may include a main body (also referred to as a base station device) arranged to control wireless communication, and one or a plurality of remote radio heads (RRHs) installed at a position different from the main body. Further, various types of terminals described below operate as base stations by temporarily or semi-permanently executing the base station function.

When the electronic device is applied to the user device side, for example, a mobile terminal (for example, a smart phone, a tablet computer (PC), a notebook PC, a portable game terminal, a portable/watchdog type mobile router and a digital imaging device) or an in-vehicle device It may be realized as a terminal (for example, a car navigation device). Further, the electronic device may be a wireless communication model (for example, an integrated circuit model including a single chip or a plurality of chips) attached to each terminal in the terminal.

[Application example of terminal device]
FIG. 18 is a block diagram showing an example of an exemplary configuration of a smartphone 2500 to which the contents of the present disclosure can be applied. The smartphone 2500 includes a processor 2501, a memory 2502, a storage device 2503, an external connection interface 2504, an imaging device 2506, a sensor 2507, a microphone 2508, an input device 2509, a display device 2510, a speaker 2511, a wireless communication interface 2512, and one or more. It includes an antenna switch 2515, one or more antennas 2516, a bus 2517, a battery 2518 and an auxiliary controller 2519.

The processor 2501 may be, for example, a CPU or a SoC (System on Chip), and controls the functions of the application layer and other layers of the smartphone 2500. The memory 2502 includes RAM and ROM and stores programs and data executed by the processor 2501. The storage device 2503 may include a storage medium such as a semiconductor memory or a hard disk. The external connection interface 2504 is an interface for connecting an external device (memory card or USB (Universal Serial Bus) device) to the smartphone 2500.

The imaging device 2506 includes, for example, an image sensor (for example, a CCD (Charge Coupled Device) or a CMOS (Complementary Metal Oxide Semiconductor)) to generate a captured image. The sensor 2507 includes, for example, a measurement sensor, a gyro sensor, and a geomagnetic sensor. The microphone 2508 may include a sensor group such as an acceleration sensor, etc. The microphone 2508 converts a voice input to the smartphone 2500 into a voice signal, and the input device 2509 may be a touch sensor that detects a touch on the screen of the display device 2510, for example. The display device 2510 includes a keypad, a keyboard, buttons, switches, etc., and receives an operation or information input from a user. The speaker 2511 converts the audio signal output from the smartphone 2500 into audio.

The wireless communication interface 2512 supports any cellular communication method (LTE or LTE-Advanced) and executes wireless communication. The wireless communication interface 2512 may generally include a BB processor 2513, an RF circuit 2514, and the like. The BB processor 2513 may perform, for example, encoding/decoding, modulation/demodulation, multiplexing/demultiplexing, and the like, and performs various signal processing for wireless communication. On the other hand, the RF circuit 2514 may include a mixer, a filter, an amplifier, and the like, and transmits and receives a wireless signal through the antenna 2516. The wireless communication interface 2512 may be a one-chip module in which a BB processor 2513 and an RF circuit 2514 are integrated. The wireless communication interface 2512 may include a plurality of BB processors 2513 and a plurality of RF circuits 2514 as shown in FIG. 18 illustrates an example in which the wireless communication interface 2512 includes a plurality of BB processors 2513 and a plurality of RF circuits 2514, the wireless communication interface 2512 includes a single BB processor 2513 or a single RF circuit 2514. But it's okay.

Further, the wireless communication interface 2512 may support other types of wireless communication systems such as a short-range wireless communication system, a close proximity wireless communication system or a wireless LAN (Local Area Network) system in addition to the cellular communication system. In that case, the wireless communication interface 2512 may include a BB processor 2513 and an RF circuit 2514 for each wireless communication system.

Each of the antenna switches 2515 switches a connection destination of the antenna 2516 among a plurality of circuits included in the wireless communication interface 2512 (for example, circuits for different wireless communication systems).

Each of the antennas 2516 has a single or a plurality of antenna elements (for example, a plurality of antenna elements forming a MIMO antenna), and is used for transmitting and receiving radio signals by the radio communication interface 2512. The smartphone 2500 may include a plurality of antennas 2516 as illustrated in FIG. 21 illustrates the example in which the smartphone 2500 has a plurality of antennas 2516, the smartphone 2500 may have a single antenna 2516.

Furthermore, the smartphone 2500 may include an antenna 2516 for each wireless communication system. In that case, the antenna switch 2515 may be omitted from the configuration of the smartphone 2500.

The bus 2517 connects the processor 2501, the memory 2502, the storage device 2503, the external connection interface 2504, the imaging device 2506, the sensor 2507, the microphone 2508, the input device 2509, the display device 2510, the speaker 2511, the wireless communication interface 2512, and the auxiliary controller 25125 to each other. Connecting. The battery 2518 supplies power to each block of the smartphone 2500 shown in FIG. 10 via a power supply line partially shown by a broken line in the figure. The auxiliary controller 2519 operates the minimum necessary functions of the smartphone 2500 in the sleep mode, for example.

In the smartphone 2500 shown in FIG. 18, the transceiver device of the wireless communication device on the user equipment side according to the embodiment of the present invention may be realized by the wireless communication interface 2512. At least a part of the functions of the processing circuit and/or each unit of the electronic device on the user device side or the wireless communication device according to the embodiment of the present invention may be realized by the processor 2501 or the auxiliary controller 2519. For example, the auxiliary controller 2519 can execute part of the functions of the processor 2501 to reduce the power consumption of the battery 2518. Further, the processor 2501 or the auxiliary controller 2519 executes the program stored in the memory 2502 or the storage device 2503, thereby processing circuits and/or processing circuits of the electronic device or the wireless communication device on the user device side according to the embodiment of the present invention. Realize at least part of the function of the unit.

[Application example for base station]
FIG. 19 is a block diagram showing an example of an exemplary configuration of an eNB to which the content of the present disclosure can be applied. The eNB 2300 includes one or more antennas 2310 and a base station device 2320. The base station device 2320 and each antenna 2310 may be connected to each other via an RF cable.

Each of the antennas 2310 includes a single or a plurality of antenna elements (for example, a plurality of antenna elements included in a multi-input multi-output (MIMO) antenna), and is used for transmitting and receiving radio signals by the base station device 2320. .. The eNB 2300 may include multiple antennas 2310, as shown in FIG. The plurality of antennas 2310 may be shared by a plurality of frequency bands used by the eNB 2300, for example. 19 illustrates an example in which the eNB 2300 includes a plurality of antennas 2310, the eNB 2300 may include a single antenna 2310.

The base station device 2320 includes a controller 2321, a memory 2322, a network interface 2323, and a wireless communication interface 2325.

The controller 2321 may be, for example, a CPU or DSP and operates various upper layer functions of the base station device 2320. For example, the controller 2321 generates a data packet from the data in the signal processed by the wireless communication interface 2325, and transfers the generated packet via the network interface 2323. The controller 2321 may generate a bundled packet by bundling data from a plurality of baseband processors and transfer the generated bundled packet. Further, the controller 2321 may have a logical function of executing control such as radio resource management, radio bearer control, mobility management, inflow control, and scheduling. In addition, the control may be executed in cooperation with a peripheral eNB or core network node. The memory 2322 includes a RAM and a ROM, and stores a program executed by the controller 2321 and various control data (for example, a terminal list, transmission power data, scheduling data, and the like).

The network interface 2323 is a communication interface for connecting the base station device 2320 to the core network 2324. Controller 2321 may communicate with core network nodes or other eNBs via network interface 2323. In this case, the eNB 2300 and the core network node or another eNB are connected to each other by a logic interface (for example, S1 interface and X2 interface). The network interface 2323 may be a wired communication interface or a wireless communication interface for wireless backhaul. When the network interface 2323 is a wireless communication interface, the network interface 2323 may use a frequency band higher than the frequency band used by the wireless communication interface 2325 for wireless communication.

The wireless communication interface 2325 supports an arbitrary cellular communication method (for example, LTE (Long Term Evolution), LTE-Advanced), and provides a wireless connection to a terminal located in the cell of the eNB 2300 via the antenna 2310. .. The wireless communication interface 2325 may generally include a baseband (BB) processor 2326 and an RF circuit 2327. The BB processor 2326 may perform, for example, encoding/decoding, modulation/demodulation and multiplexing/demultiplexing, layers (eg, L1, medium access control (MAC), radio link control (RLC), packet Various signal processing of the Data Convergence Protocol (PDCP) may be performed. Instead of the controller 2321, the BB processor 2326 may have some or all of the above logic functions. The BB processor 2326 may be a memory that stores a communication control program, or may be a module that includes a processor and associated circuitry arranged to execute the program. The function of the BB processor 2326 may be changeable by updating the program. The module may be a card or blade that is inserted into the slot of the base station device 2320. Alternatively, the module may be a chip mounted on a card or blade. On the other hand, the RF circuit 2327 may include a mixer, a filter, and an amplifier, for example, and transmits/receives a wireless signal through the antenna 2310.

As shown in FIG. 19, the wireless communication interface 2325 may include a plurality of BB processors 2326. For example, the BB processors 2326 may be shared by the frequency bands used by the eNB 2300. As shown in FIG. 19, the wireless communication interface 2325 may include a plurality of RF circuits 2327. For example, the plurality of RF circuits 2327 may be shared by the plurality of antenna elements. Although FIG. 19 shows an example in which the wireless communication interface 2325 includes a plurality of BB processors 2326 and a plurality of RF circuits 2327, the wireless communication interface 2325 may include a single BB processor 2326 or a single RF circuit 2327. ..

In the eNB 2300 shown in FIG. 19, the transceiver of the wireless communication device on the base station side according to the embodiment of the present invention may be realized by the wireless communication interface 2325. At least a part of the functions of the processing circuit and/or each unit of the electronic device or the wireless communication device on the base station side according to the embodiment of the present invention may be realized by the controller 2321. For example, the controller 2321 executes at least a part of the functions of the processing circuit and/or each unit of the electronic device or the wireless communication device on the base station side according to the embodiment of the present invention by executing the program stored in the memory 2322. You may execute.

[Application examples for car navigation devices]
FIG. 20 is a block diagram showing an example of an exemplary configuration of a car navigation device 2120 to which the technology of the content of the present disclosure can be applied. The car navigation device 2120 includes a processor 2121, a memory 2122, a GPS (Global Positioning System) module 2124, a sensor 2125, a data interface 2126, a content player 2127, a storage medium interface 2128, an input device 2129, a display device 2130, a speaker 2131, and wireless communication. It includes an interface 2133, one or more antenna switches 2136, one or more antennas 2137 and a battery 2138.

The processor 2121 may be, for example, a CPU or SoC, and controls the navigation function and other functions of the car navigation device 2120. The memory 2122 includes RAM and ROM, and stores data and programs executed by the processor 2121.

The GPS module 2124 measures the position (eg, latitude, longitude, and altitude) of the car navigation device 2120 using GPS signals received from GPS satellites. The sensor 2125 may include, for example, a sensor group including a gyro sensor, a geomagnetic sensor, and a barometric pressure sensor. The data interface 2126 is connected to, for example, the vehicle-mounted network 2141 via a terminal (not shown), and acquires data generated by the vehicle (for example, vehicle speed data).

The content player 2127 plays the content stored in the storage medium (eg, CD or DVD) inserted in the storage medium interface 2128. The input device 2129 includes a touch sensor, a button, or a switch arranged to detect a touch on the screen of the display device 2130, for example, and receives an operation or information input by the user. The display device 2130 includes, for example, a screen of an LCD or an OLED display, and displays an image of navigation function or content to be reproduced. The speaker 2131 outputs the sound of the navigation function or the content to be reproduced.

The wireless communication interface 2133 supports any cellular communication method (for example, LTE, LTE-Advanced) and executes wireless communication. The wireless communication interface 2133 may generally include, for example, a BB processor 2134 and an RF circuit 2121. The BB processor 2134 may perform encoding/decoding, modulation/demodulation and multiplexing/demultiplexing, for example, and perform various types of signal processing for wireless communication. On the other hand, the RF circuit 2121 may include, for example, a mixer, a filter, and an amplifier, and transmits/receives a wireless signal through the antenna 2137. The wireless communication interface 2133 may be a one-chip module in which the BB processor 2134 and the RF circuit 2121 are integrated. As shown in FIG. 21, the wireless communication interface 2133 may include a plurality of BB processors 2134 and a plurality of RF circuits 2121. Although FIG. 21 shows an example in which the wireless communication interface 2133 includes a plurality of BB processors 2134 and a plurality of RF circuits 2121, the wireless communication interface 2133 may include one BB processor 2134 or one RF circuit 2121.

In addition to the cellular communication system, the wireless communication interface 2133 may support another type of wireless communication system, for example, a short-range wireless communication system, a close proximity wireless communication system or a wireless LAN system. In this case, the wireless communication interface 2133 may include the BB processor 2134 and the RF circuit 2121 for each wireless communication method.

Each of the antenna switches 2136 handovers the connection destination of the antenna 2137 among a plurality of circuits (for example, circuits for different wireless communication systems) included in the wireless communication interface 2133.

Each of the antennas 2137 includes one or a plurality of antenna elements (for example, a plurality of antenna elements included in a MIMO antenna), and is used for transmitting and receiving radio signals by the radio communication interface 2133. As shown in FIG. 20, the car navigation device 2120 may include a plurality of antennas 2137. Although FIG. 20 shows an example in which the car navigation device 2120 includes a plurality of antennas 2137, the car navigation device 2120 may include one antenna 2137.

The car navigation device 2120 may also include an antenna 2137 for each wireless communication system. In this case, the antenna switch 2136 may be omitted from the configuration of the car navigation device 2120.

Battery 2138 supplies electric power to each block of car navigation device 2120 shown in FIG. 20 via a branch line partially shown by a broken line in the figure. Further, the battery 2138 stores electric power supplied from the vehicle side.

In the car navigation device 210 shown in FIG. 20, the transceiver device of the wireless communication device on the user equipment side according to the embodiment of the present invention may be implemented by the processor 2133. At least a part of the functions of the processing circuit and/or each unit of the electronic device on the user device side or the moneyless communication device according to the embodiment of the present invention may be realized by the processor 2121.

The technique of the content of the present disclosure may be implemented as an in-vehicle system (or vehicle) 2140 including one or more blocks of a car navigation device 2120, an in-vehicle network 2141, and a vehicle module 2142. The vehicle module 2142 generates vehicle data (for example, vehicle speed, engine speed, failure information) and outputs the generated data to the in-vehicle network 2141.

In the above description, in the description of specific examples of the present invention, features described and/or shown for one embodiment are used for one or more other embodiments in the same or similar manner, and It is possible to combine the features in the above embodiments or replace the features in other embodiments.

It should be emphasized that when the term "includes/includes" is used herein, it refers to the presence of a feature, element, step or module and the presence or addition of one or more other features, elements, steps or modules. Do not exclude

In the embodiments and examples described above, numerical reference signs are used to indicate each step and/or unit. Those skilled in the art will appreciate that these signs are provided for convenience of description and drawing, and not in any order or other limitation.

Further, the method of the present disclosure is not limited to being executed in the time sequence described in the specification, and may be executed in parallel or independently in another time sequence. Therefore, the execution order of the methods described herein does not limit the technical scope of the present disclosure.

Although the present disclosure has been described above with reference to the description of the specific embodiments of the present disclosure, it should be understood that the above embodiments and exemplifications are merely illustrative and not restrictive. Those skilled in the art can design various modifications, improvements, and equivalents to the present disclosure within the spirit and scope of the claims. These modifications, improvements or equivalents should be considered to be within the protection scope of the present disclosure.

Claims (25)

An electronic device used on the base station side,
A processing circuit, the processing circuit comprising:
Control to perform channel detection based on a specific beam direction on the target channel on the beam corresponding to the user equipment,
An electronic device arranged to determine access to the target channel based on a result of the channel detection. The processing circuit is further arranged to control to direct the user equipment to perform channel detection based on a particular beam direction for the target channel, and
The electronic device according to claim 1, wherein the confirmation is further based on a result of the channel detection of the user device. The processing circuit further comprises
The electronic device according to claim 1, wherein the electronic device is arranged to determine a beam arrangement for communication based on a specific beam direction between the base station and the user equipment. The processing circuit further comprises
Within the maximum channel occupancy time established for the beam, for another user equipment that falls within the range of the beam, if another channel detection is not performed, the target channel is used to communicate with the other user equipment. The electronic device according to claim 1, wherein the electronic device is arranged to perform the communication. The electronic device of claim 1, wherein the processing circuit is further arranged to control to receive real-time position information reported by the user device. The electronic device according to claim 1, wherein the processing circuit is arranged to perform data transmission in a time division multiplex mode to different user devices within the same beam range. The electronic device according to claim 1, wherein the processing circuit is arranged so as to control data transmission with the user device on the target channel by using a minislot as a scheduling unit. The electronic device according to claim 7, wherein the processing circuit is arranged so as to instruct installation of the mini-slot according to downlink control information of a physical downlink control channel. If the downlink control information indicates that one user equipment is scheduled, the user equipment transmits data in the next predetermined number of minislots, otherwise the user equipment is The electronic device according to claim 8, wherein the electronic device is switched to a standby state until the next downlink control information. The electronic device according to claim 1, wherein the channel detection includes a clear channel evaluation based on a specific beam direction or a received signal strength indicator based on a specific beam direction. The electronic device according to claim 3, wherein in the beam arrangement, different beams occupy the same resource, and the processing circuit is further arranged to control the base station to perform self-interference cancellation. .. The electronic device according to claim 3, wherein different beams occupy different resources in the beam arrangement. The electronic device according to any one of claims 1 to 12, wherein the target channel is located in an unlicensed band of 60 GHz. A wireless communication device used on the base station side,
A transceiver, and a processing circuit,
The processing circuit is
Controlling the transceiver to perform channel detection based on a specific beam direction for a target channel on a beam corresponding to the user equipment,
A wireless communication device arranged to determine access to the target channel based on a result of the channel detection. A wireless communication method used on the base station side,
On the beam corresponding to the user equipment, the channel detection based on the specific beam direction is performed for the target channel,
A method of wireless communication, comprising determining access to the target channel based on a result of the channel detection. An electronic device used on the user device side,
A processing circuit, the processing circuit comprising:
On the beam corresponding to the base station, control to perform channel detection based on a specific beam direction for the target channel,
An electronic device arranged to control to access the target channel based on a result of the channel detection or an instruction from the base station. The processing circuit further comprises
Controlling to receive an instruction to perform the channel detection from the base station,
The electronic device according to claim 16, which is arranged to control to report the result of the channel detection to the base station. The processing circuit further comprises
The electronic device according to claim 16, which is arranged to determine a beam arrangement for communication based on a specific beam direction between the user equipment and the base station. 17. The electronic device of claim 16, wherein the processing circuit is further arranged to control to report real-time location information of the user device to the base station. The electronic device according to claim 16, wherein the processing circuit is arranged to control data transmission with the base station on the target channel with a minislot as a scheduling unit. 21. The electronic device according to claim 20, wherein the processing circuit is arranged so as to receive an instruction regarding installation of the minislot according to downlink control information of a physical downlink control channel. If the downlink control information indicates that the user equipment is scheduled, the user equipment transmits data in the next predetermined number of minislots, otherwise the user equipment is The electronic device according to claim 21, wherein the electronic device is switched to a standby state until the next downlink control information. 17. The electronic device according to claim 16, wherein the channel detection includes a clear channel estimation based on a specific beam direction or a received signal strength indicator based on a specific beam direction. A wireless communication device used on the user equipment side,
A transmission/reception device and a processing circuit are included, and the processing circuit is
On the beam corresponding to the base station, controlling the transceiver to perform channel detection based on a specific beam direction for the target channel,
A wireless communication device arranged to control the transmitting/receiving device to access the target channel based on a result of the channel detection or an instruction from the base station. A wireless communication method used on the user equipment side,
On the beam corresponding to the base station, perform channel detection based on a specific beam direction for the target channel,
A wireless communication method comprising: accessing the target channel based on a result of the channel detection or an instruction from the base station.

Images